Henri schneider



U ITED STATES PATENT OEEIcE.

HENRI SCHNEIDER, OF OREUSOT, FRANCE.

STEEL ALLOY.

SPECIFICATION forming part of Letters Patent No. 560,150, dated May 12,1896.

Application filed March 9, 1896. Serial No. 582,453. (No specimens.)Patented in France December 24,1895,No. 250,058.

To all whom it may concern.-

Be it known that I, HENRI SCHNEIDER, of Creusot, (Saone-et-Loire,)France, have invented a new and useful Improvement in Steel Alloys andApplication of the Same to the Manufacture of Armor, which is fully setforth in the following specification, and which has been patented inFrance, No. 250,058, dated December 24:, 1895.

The present invention has reference to the production of an alloy ofsteel with molybdenum and chromium in proportions substantially ashereinafter stated and to the application of such alloy to themanufacture of armor-plate of all kinds and dimensions and of anythickness.

The investigations and experiments which I have made have led to thediscovery that the introduction of chromium in the proportion of from0.2 to three per cent. into molybdenum steel, containing from 0.2 tofive per cent. of molybdenum, gives to such steel, after hardening, theproperty of greatly-increased resistance to penetration Without increaseof fragility. At the same time the addition of chromium in theproportion stated does not impair or modify the other desirableproperties of molybdenum steel, such as its aptitude for forging androlling and for the work of tools or for undergoing the cementationtreatment.

This alloy on an industrial scale may be obtained in the crucible, or inthe converter, or upon the hearth, by the Well-known processes,introducing the chromium in the state of chromium or as ferro-chromiumand the molybdenum in the metallic state or as an alloy.

I claim as my invention- The Within-described alloy of steel Withmolybdenum and chromiumjn the proportions of 0.2 to five per cent. ofthe former and O. 2 to three per cent. of the latter, substantially asdescribed.

In testimony whereof I have signed this specification in the presence oftwo subscribing Witnesses.

HENRI SCHNEIDER.

IVitnesses:

CHARLES LAURENCE, HIPPOLYTE OLIVIER.

